JPS5814917A - Amorphous metal strip and preparation thereof - Google Patents
Amorphous metal strip and preparation thereofInfo
- Publication number
- JPS5814917A JPS5814917A JP11073481A JP11073481A JPS5814917A JP S5814917 A JPS5814917 A JP S5814917A JP 11073481 A JP11073481 A JP 11073481A JP 11073481 A JP11073481 A JP 11073481A JP S5814917 A JPS5814917 A JP S5814917A
- Authority
- JP
- Japan
- Prior art keywords
- metal strip
- roll
- amorphous metal
- shape
- flat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Continuous Casting (AREA)
- Inorganic Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は非晶質金鋼帯及びその製造方法に関す−１
非晶質金属帯は強磁性を有するとともに、結晶質では得
ることができない組成のものについても均一な組成の合
金釡得ることができるところから、電磁フィルターの炉
材などに広く用いられている。Detailed Description of the Invention The present invention relates to an amorphous gold steel strip and a method for manufacturing the same.-1 Amorphous metal strips have ferromagnetic properties and also have a uniform composition that cannot be obtained from crystalline metal strips. It is widely used as a furnace material for electromagnetic filters because it can produce an alloy pot with the same composition.
従来この非晶質金属帯は、溶湯急冷法によって製造され
ている。溶湯急冷法は第１図に示すように、金ＪＡ（純
金属又は合金）溶湯１をヒーター２、で適度な温度に保
持しつつ、ノズル３から回転するロール４の表面に噴出
し、急冷して金属帯５どするものである。Conventionally, this amorphous metal strip has been manufactured by a molten metal quenching method. As shown in Figure 1, in the molten metal quenching method, gold JA (pure metal or alloy) molten metal 1 is maintained at an appropriate temperature with a heater 2, and is jetted from a nozzle 3 onto the surface of a rotating roll 4 to rapidly cool it. This is to remove the metal band 5.
ところが、この従来の溶湯急冷法では平坦な非・品質金
属帯しか得ることができなかった。即ち、金属帯の幅方
向の断面を示す第２図において、口 ゛−ルに接触して
急冷きれた面５Ａは平らな面とな 。However, with this conventional molten metal quenching method, only a flat, non-quality metal strip could be obtained. That is, in FIG. 2, which shows a cross section of the metal strip in the width direction, the surface 5A that has come into contact with the mouth and is rapidly cooled is a flat surface.
リ、ロールに接することなく凝固した面５Ｂは溶湯の表
面張力によってやや丸みを帯びた面となり、全体として
平坦なものとなっている。第２図Ａは金属帯幅の広い場
合、第２図Ｂは金属帯幅の狭い場合である。The surface 5B solidified without contacting the roll becomes a slightly rounded surface due to the surface tension of the molten metal, and is flat as a whole. FIG. 2A shows the case where the metal band width is wide, and FIG. 2B shows the case where the metal band width is narrow.
このような平坦な非晶質金属帯を電磁フィルターの部材
として用いた場合には、流体必・ら応力が ′〃口えら
れると隣接したリボンの面が重なりあって、金属帯がフ
ィルター中で偏在したり、あるいは変形して破断しやす
ｋなるなどの問題があった。特にフィルターの捕捉性能
を高めるためにリボン幅を小さくした場合にはこのよう
な問題が発生しやすかった。When such a flat amorphous metal strip is used as a member of an electromagnetic filter, when stress is applied to the fluid, the surfaces of adjacent ribbons overlap, causing the metal strip to collapse inside the filter. There were problems such as uneven distribution or deformation and easy breakage. Such problems are particularly likely to occur when the ribbon width is reduced in order to improve the filter's capture performance.
本発明の目的は、このような従来技術の問題点門解消し
た非晶質金属帯及びその製造方法を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an amorphous metal strip and a method for manufacturing the same, which eliminates the problems of the prior art.
本発明は、実質的に連婢した非平坦面を有する帯状であ
る非晶質金属帯に関し、また溶湯急冷法で非晶質金属帯
を製造するに際し、ロール表面に凹凸を設けることによ
って、非平坦状の非晶質金属帯を製造する方法に関する
ものである。The present invention relates to a band-shaped amorphous metal strip having substantially continuous non-flat surfaces, and also relates to a non-crystalline metal strip that is formed by providing irregularities on the roll surface when producing the amorphous metal strip by a molten metal quenching method. The present invention relates to a method of manufacturing a flat amorphous metal strip.
本発明においては用いられる金属原料は特に限定される
ものではなく純金属の他、各種の合金をも原料とするこ
とができる。The metal raw materials used in the present invention are not particularly limited, and in addition to pure metals, various alloys can also be used as raw materials.
非平坦状の非晶質金属帯を電磁フィルターに用いた場合
には次のような優れた効果が得られる。When a non-flat amorphous metal strip is used in an electromagnetic filter, the following excellent effects can be obtained.
第１に磁性物質の捕捉性能において優れている。First, it is excellent in its ability to capture magnetic substances.
即ち、電磁フィルターは被処理流体中の物質を磁力作用
によって捕捉するものであるが、平坦な非晶質金属帯の
場合、磁性物質を磁気的に捕捉する−ための高勾配磁束
点が金属帯の側端而のみであるのに対し、非平坦状の金
属帯の場合は、側端面に加えて各頂点が高勾配の磁束を
有する捕捉点となり、捕捉点の量が著しく増大するから
である。In other words, an electromagnetic filter traps substances in the fluid to be treated using magnetic force, but in the case of a flat amorphous metal strip, the high gradient magnetic flux points for magnetically trapping magnetic substances are located in the metal strip. In contrast, in the case of a non-flat metal strip, in addition to the side edges, each vertex becomes a trapping point with a high gradient magnetic flux, and the amount of trapping points increases significantly. .
第２に、金属帯が非平坦状であり、頂部と谷部を有する
から該金１４帯の面が重なりにくくなり、金属帯が偏在
することがなくなシ、フィルターの通水抵抗が減少する
。Second, since the metal strips are non-flat and have tops and valleys, the surfaces of the gold 14 strips are less likely to overlap, preventing the metal strips from being unevenly distributed, and reducing the water flow resistance of the filter. .
第３に、従ってフィルターの通過水を増加させることが
できるから、第１の捕捉性能の増加と相まって、電磁フ
ィルターの処理能力を増大させることができる。Thirdly, since the amount of water passing through the filter can therefore be increased, combined with the increase in the first capture performance, the throughput of the electromagnetic filter can be increased.
第４に、金属帯が流体から応力を受けても変形する程度
が小さくなシ、変形に伴う疲労が小さく′ なシ、金
属帯の寿命も長くなる。Fourthly, even if the metal band receives stress from the fluid, the degree of deformation is small, the fatigue associated with the deformation is small, and the life of the metal band is extended.
また、本発明の非晶質金属帯を熱交換用部材として用い
た場合には、単位長さ当りの表面積が大きくなることか
ら、熱交換性が向上する。Further, when the amorphous metal strip of the present invention is used as a heat exchange member, the surface area per unit length is increased, so that heat exchange performance is improved.
さらに、本発明の非晶質金属帯を各種化学反応の触媒に
用いた場合゛にも、同様に単位長さ当りの表１面積が大
きいことから反応速１度を増大させることが可能となる
。Furthermore, when the amorphous metal strip of the present invention is used as a catalyst for various chemical reactions, it is possible to increase the reaction rate by 1 degree because the surface area per unit length is large. .
また本発明の製造方法によれば、溶湯は凹凸を有するロ
ールの表面に沿って凝固するから、ロール表面の形状に
応じた非平坦状の非晶質金属帯となる。Furthermore, according to the manufacturing method of the present invention, the molten metal solidifies along the uneven surface of the roll, resulting in a non-flat amorphous metal band corresponding to the shape of the roll surface.
本発明において、ロール表面に凹凸を設ける手段として
は、例えば切削あるいは鋭敏な砥石を用いて刻設する方
法等が採用できる。In the present invention, as a means for providing unevenness on the roll surface, for example, cutting or engraving using a sharp grindstone can be employed.
またこの凹凸の形状も任意のものとすることができる。Further, the shape of the unevenness can also be arbitrary.
例えば、ロール表面に溝を多数段ければ得られる金属帯
も、多数の摺曲を有するよ、うになる。For example, a metal strip obtained by forming many grooves on the surface of a roll will also have many sliding curvatures.
しかしてとの′溝の形状は、任意のものとすることがで
き、第３図Ａ−Ｄに示すようにＶ字状の溝を連続的に（
第３図Ａ）、適当な間隔をおいて（第３図Ｂ）、あるい
は台形の溝（第３図Ｃ）、正弦波形の溝（第３図Ｄ）な
どのようにすることこのような溝形状としたときの得ら
れる金属帯 ゛の長手方向の断面形状を第４図Ａ−Ｄ
に示す。第４図のＡ−Ｄは第３図のＡ−Ｄにそれぞれ対
応するものである。However, the shape of the groove can be arbitrary, and as shown in FIG. 3A-D, the V-shaped groove is continuously formed (
Figure 3A), at appropriate intervals (Figure 3B), trapezoidal grooves (Figure 3C), sinusoidal grooves (Figure 3D), etc. The cross-sectional shape in the longitudinal direction of the metal strip obtained when shaped is shown in Figures 4A-D.
Shown below. A to D in FIG. 4 correspond to A to D in FIG. 3, respectively.
特に本発明においては金属帯の降伏は、長手方向に正弦
波形状に摺曲し、悲平坦状となっているものが好ましい
。これは、７字形状や台形状のものは、ｉ部が折れ曲っ
た形状のものであるから、該、頂部に応力集中が生じ材
料の疲労が蓄積しやすいが、正弦波形状にするとこのよ
うな折れ曲シ部がなく、応力集中がほとんど無くなるか
らである。In particular, in the present invention, it is preferable that the metal band yields in a sinusoidal shape in the longitudinal direction and is flat. This is because the shape of a figure 7 or trapezoid has a bent i section, so stress concentration occurs at the top and fatigue of the material tends to accumulate, but when it is made into a sine wave shape, this happens. This is because there are no bends and stress concentration is almost eliminated.
本発明の製造方法によれば溶湯がロールに接触して急冷
凝固する際の自由凝固面において、表面張力の影響が小
さくなるため非晶質金属帯の厚さが均一なものになると
いう効果がある。また本発明は従来の溶湯急冷法による
製造装置のロー′ル表面に凹凸を設けるだけですむから
非平坦状の非晶質金属帯を容易に製造することができる
。 □以下実施例について説明する。According to the manufacturing method of the present invention, the effect of surface tension on the free solidification surface when the molten metal contacts the rolls and rapidly solidifies is reduced, so that the thickness of the amorphous metal strip becomes uniform. be. Further, the present invention can easily produce a non-flat amorphous metal strip because it is sufficient to provide irregularities on the roll surface of a production apparatus using a conventional molten metal quenching method. □Examples will be explained below.
実施例１
第１図に示す溶湯急冷法による製造装置において、ロー
ル表面にロール軸と平行方向に溝を設けた。ロール表面
の周方向の断面形状は正弦波形であり該正弦波形の波長
は５０μｍ１溝の深さは２５μｍである。Example 1 In a manufacturing apparatus using the molten metal quenching method shown in FIG. 1, grooves were provided on the roll surface in a direction parallel to the roll axis. The cross-sectional shape of the roll surface in the circumferential direction is a sinusoidal waveform, the wavelength of the sinusoidal waveform is 50 μm, and the depth of one groove is 25 μm.
原料として、Ｐｅ７５ａｔ％、Ｃｒ６ａｔ％ 、Ｐ８ａ
ｔ％＋Ｂ３ａ、ｔ％、Ｃ３ａｔ％の組成の合金を用い、
これを１３００ｃの溶湯とし、ノズルｉ−ラｏ −ル表
面に噴射し、５０ｍ／ｇ、、の温度で１５０μｍの幅の
合金−金製造した。この合金帯は長手方向に正弦波形に
摺曲しておシ、その形状は、ロール表面の形状と一致し
た。また幅方向の厚さも均一であった。As raw materials, Pe75at%, Cr6at%, P8a
Using an alloy with a composition of t% + B3a, t%, C3at%,
This was made into a molten metal of 1300c, which was injected onto the surface of the nozzle I-Rail to produce alloy-gold having a width of 150 μm at a temperature of 50 m/g. This alloy strip was sinusoidally curved in the longitudinal direction, and its shape matched the shape of the roll surface. Moreover, the thickness in the width direction was also uniform.
実施例２
゛ 第１図に示す製造装置において、ロール表面に５０
μｍおきに、′２５μｍ幅の半波正弦波形１所品形状の
溝を設け、実施例１と同様にして合金帯を製造した。合
金帯の形状はロール表面の形状と一致し、幅方向の厚さ
も均一であった。Example 2 ゛ In the manufacturing equipment shown in Fig. 1, 50%
An alloy strip was produced in the same manner as in Example 1, with grooves in the shape of a half-wave sinusoidal waveform having a width of 25 μm being provided at μm intervals. The shape of the alloy strip matched the shape of the roll surface, and the thickness in the width direction was also uniform.
試験例１
実施例１及び２で得た合金帯について１８０度の曲げを
ｄシ返し行った。この際の破断に至るまでの延べの曲げ
回数を第１表に示す。第１表には従来法で製造された平
坦な非晶質金属帯の試躾結果も併すて示す。Test Example 1 The alloy strips obtained in Examples 1 and 2 were bent by 180 degrees. Table 1 shows the total number of bending times until breakage occurred. Table 1 also shows test results for flat amorphous metal strips produced by conventional methods.
第１表より、本発明に係る非晶質金属帯は従来のものに
比べて優れた曲げ疲労特性を有することが認められる。From Table 1, it is recognized that the amorphous metal strip according to the present invention has superior bending fatigue properties compared to the conventional one.
また、正弦波形のものは一層優れていることが認められ
る。It is also recognized that the sinusoidal waveform is even better.
試呻例２
１０９１１１１＋１φＸ１００ｍＬの電磁フィルター容
器に、実施例１で得た合金帯を５ ｖｏ１％充填し、通
水速度５００ｍ／ｈで水を処理した。この場合の通水抵
抗の経時変化につい、て第５図に示す。第５図には従来
法で製造された平坦な非晶質金属帯についての測定結果
をも併せて示した。第５図において、１１は実施例１に
係る合金帯を、１２は従来法に係る非晶質金属帯を示す
。Test Example 2 A 1091111+1φ×100mL electromagnetic filter container was filled with 5 vol % of the alloy strip obtained in Example 1, and water was treated at a water flow rate of 500 m/h. Figure 5 shows the change in water flow resistance over time in this case. FIG. 5 also shows measurement results for a flat amorphous metal strip produced by the conventional method. In FIG. 5, reference numeral 11 indicates an alloy strip according to Example 1, and reference numeral 12 indicates an amorphous metal strip according to the conventional method.
第５図より、本発明に係る非晶質金属帯は電磁フィルタ
ー用戸材として用いた場合、従来のものに比べ通水抵抗
の通水時間の経過に伴う通水抵抗の増加が著しく小さい
ことが認められる。From FIG. 5, when the amorphous metal strip according to the present invention is used as a door material for an electromagnetic filter, the increase in water flow resistance with the passage of water flow time is significantly smaller than that of the conventional one. is recognized.
試験例３
試験例２においてＦｅ５０．を２００ ｐｐｔｎ 含む
水を４ＫＯｅの外部印加磁界の条件下で処理した。Test Example 3 In Test Example 2, Fe50. Water containing 200 pptn of was treated under the condition of an externally applied magnetic field of 4 KOe.
このときのＦ’ｅ３ｏ、 の捕捉率の経時変化を第６
図に示す。第６図より実施例１に係る非晶質金属帯は磁
性物質の捕捉性においても従来のものに比べて著しく優
れた特性を有することが認められる。At this time, the change over time in the capture rate of F'e3o,
As shown in the figure. From FIG. 6, it can be seen that the amorphous metal strip according to Example 1 has significantly superior characteristics in terms of magnetic substance trapping ability compared to conventional strips.
以上説明したとおり、本発明の非晶買金、鴫吊：は非平
坦状であるから、磁性物質の捕捉性能が高く、耐久性に
優れるとともに、単位長さ当りの表面積が大きく、電磁
フィルター用Ｆ材、熱交換用部材、触媒等に好適である
。As explained above, since the amorphous metal of the present invention has a non-flat shape, it has a high ability to capture magnetic substances, is excellent in durability, has a large surface area per unit length, and is suitable for electromagnetic filters. Suitable for F materials, heat exchange members, catalysts, etc.
また、本発明の製造方法によれば、非・）’Ｉ１１状の
非晶質金属帯を容易に製造することができ、また得られ
る金属帯の厚さも均一なものになるという効果がある。Further, according to the manufacturing method of the present invention, an amorphous metal strip having a non-)'I11 shape can be easily manufactured, and the thickness of the obtained metal strip can also be made uniform.
第１図は、溶湯急冷法による非晶買金、１ｇ帯の製造装
置の説明図、第２図は従来法によって製造された非晶質
金属帯の幅方向の断面図、第３図はロール表面の周方向
のｌＩ！ｌ？面図、第４図は実施例に係る非晶質金属帯
の断面図、第５図は非晶質金属帯を電磁フィルター用炉
材として用いた場合の通水抵抗Ω経時変化を示す図、第
６図は捕捉率の経時変化を示す図である。
￥ｔｒｉＪ
情２図
＜Ａ）
（Ｂ）
と皿皿
Ｖｒｓ口
Ｊ −１（Ｂ！ｆ Ｐ、ＩＩ （ｈ）第
６口
１赴 理 崎関
第１頁の続き
０発 明 者 早田文隆
東京都千代田区内神田−丁目１
番１４号日立プラント建設株式会
社内
０発 明 者 湯用隆男
東京都千代田区内神田−丁目１
番１４号日立プラント建設株式会
社内
■出 願 人 日立プラント建設株式会社東京都千代田
区内神田−丁目１
番１４号Figure 1 is an explanatory diagram of an apparatus for manufacturing 1g band of amorphous metal purchased by quenching molten metal, Figure 2 is a cross-sectional view in the width direction of an amorphous metal band manufactured by the conventional method, and Figure 3 is a roll lI in the circumferential direction of the surface! l? 4 is a cross-sectional view of the amorphous metal strip according to the example, and FIG. 5 is a diagram showing the change in water flow resistance Ω over time when the amorphous metal strip is used as a furnace material for an electromagnetic filter. FIG. 6 is a diagram showing the change in capture rate over time. ¥triJ Information 2 Diagram <A) (B) and plate Vrs mouth J -1 (B!f P, II (h)th
6-1 Go to Sakiseki Continuation of page 1 0 Author: Fumitaka Hayata Hitachi Plant Construction Co., Ltd., 1-14 Uchikanda-chome, Chiyoda-ku, Tokyo 0 Author: Takao Yuyogi Uchikanda, Chiyoda-ku, Tokyo No. 1-14 Hitachi Plant Construction Co., Ltd. Applicant: Hitachi Plant Construction Co., Ltd. Uchikanda-1-14, Chiyoda-ku, Tokyo
Claims (1)
とを特徴とする非晶質金属帯。 ２、特許請求の範囲第１項において、前記非晶質金属帯
は長手方向に正弦波形に摺曲したものであることを特甲
とする非晶質金属帯。 ３１０回転するロールの表面に凹゛凸を設け、該ロール
の表面に金属溶湯を噴射して急冷凝固させると法。
、 ４、特許請求の範囲第３項において、該ロール表面の凹
凸は、該ロール゛の軸と平行方向の溝であることを特徴
とする非平坦状の非晶質金属帯の製造方法。 ５、特許請求の範囲第４項において、該ロフル表面の周
方向の断面形状は正弦波形であることを特徴とする非平
坦状の非晶質金属帯の製造方法。 ６、特許請求の範囲第３項ないし第５項のいずれか１項
において、該金属溶湯が合金溶湯であることを特徴とす
る非平坦状の非晶質金鋼帯の製造方法。[Scope of Claims] 1. An amorphous metal strip characterized in that it is strip-shaped and has substantially repeated non-planar surfaces. 2. The amorphous metal band according to claim 1, wherein the amorphous metal band is curved in a sinusoidal waveform in the longitudinal direction. The method involves providing unevenness on the surface of a roll that rotates for 310 degrees, and injecting molten metal onto the surface of the roll to rapidly solidify it.
4. The method of manufacturing a non-flat amorphous metal strip according to claim 3, wherein the unevenness on the surface of the roll is a groove in a direction parallel to the axis of the roll. 5. The method of manufacturing a non-flat amorphous metal strip according to claim 4, wherein the circumferential cross-sectional shape of the Roful surface is a sinusoidal waveform. 6. A method for producing a non-flat amorphous gold steel strip according to any one of claims 3 to 5, characterized in that the molten metal is a molten alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11073481A JPS5814917A (en) | 1981-07-17 | 1981-07-17 | Amorphous metal strip and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11073481A JPS5814917A (en) | 1981-07-17 | 1981-07-17 | Amorphous metal strip and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5814917A true JPS5814917A (en) | 1983-01-28 |
| JPS631887B2 JPS631887B2 (en) | 1988-01-14 |
Family
ID=14543154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11073481A Granted JPS5814917A (en) | 1981-07-17 | 1981-07-17 | Amorphous metal strip and preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5814917A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150113A (en) * | 1983-02-10 | 1984-08-28 | Nippon Steel Corp | Amorphous metal short fiber |
| JPS59157322A (en) * | 1983-02-18 | 1984-09-06 | Nippon Steel Corp | Metallic short fiber having v-shaped bent part and its manufacture |
| JPS60184449A (en) * | 1984-03-05 | 1985-09-19 | Hitachi Ltd | Drum type continuous casting machine |
| JPS63165396U (en) * | 1987-04-20 | 1988-10-27 | ||
| JPS63165397U (en) * | 1987-04-20 | 1988-10-27 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0266366U (en) * | 1988-11-11 | 1990-05-18 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5478569A (en) * | 1977-12-06 | 1979-06-22 | Nippon Steel Corp | Elimination method of magnetic material from fluid |
| JPS55126351A (en) * | 1979-03-16 | 1980-09-30 | Allied Chem | Metallic strip with fixed shape and its preparation and its device |
-
1981
- 1981-07-17 JP JP11073481A patent/JPS5814917A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5478569A (en) * | 1977-12-06 | 1979-06-22 | Nippon Steel Corp | Elimination method of magnetic material from fluid |
| JPS55126351A (en) * | 1979-03-16 | 1980-09-30 | Allied Chem | Metallic strip with fixed shape and its preparation and its device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150113A (en) * | 1983-02-10 | 1984-08-28 | Nippon Steel Corp | Amorphous metal short fiber |
| JPS59157322A (en) * | 1983-02-18 | 1984-09-06 | Nippon Steel Corp | Metallic short fiber having v-shaped bent part and its manufacture |
| JPS60184449A (en) * | 1984-03-05 | 1985-09-19 | Hitachi Ltd | Drum type continuous casting machine |
| JPH0724924B2 (en) * | 1984-03-05 | 1995-03-22 | 株式会社日立製作所 | Drum type continuous casting machine |
| JPS63165396U (en) * | 1987-04-20 | 1988-10-27 | ||
| JPS63165397U (en) * | 1987-04-20 | 1988-10-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS631887B2 (en) | 1988-01-14 |
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